Oilpan: trace HTMLConstructionSite::PendingText part object.

Oilpan: trace HTMLConstructionSite::PendingText part object.

Convert a pair of RefPtr<>s to Members with Oilpan enabled & have the
PendingText object be traced by its HTMLConstructionSite parent.

Convert remaining RefPtr<Node> uses in html/ as well.

R=zerny@chromium.org,ager@chromium.org
BUG=357163
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175369

[sof, 2014-06-03 11:47:07]

Please take a look.

[zerny-chromium, 2014-06-03 11:51:53]

lgtm

[Mads Ager (chromium), 2014-06-03 11:53:12]

lgtm2

[sof, 2014-06-03 11:56:21]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-06-03 11:57:02]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sigbjornf@opera.com/310793002/1

[haraken, 2014-06-03 12:02:08]

LGTM

[commit-bot: I haz the power, 2014-06-03 13:03:40]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/10348)

[commit-bot: I haz the power, 2014-06-03 13:36:28]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-06-03 13:36:29]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/10360)

[sof, 2014-06-03 13:38:20]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-06-03 13:38:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sigbjornf@opera.com/310793002/1

[commit-bot: I haz the power, 2014-06-03 14:26:36]

Change committed as 175369